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techtalk:ih:engctl01 [2019/03/28 04:29] ixl2relax [Ignition Module - Timeout] |
techtalk:ih:engctl01 [2019/12/05 01:43] hippysmack [Timing Marks] |
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| | On 1980 and 1981 models, the solid-state ignition control module is mounted on the bottom of the battery carrier/oil tank. On 1982 and later models, the control module is located behind the side cover, mounted to the frame next to the battery.\\ \\ NOTE: On 1980-early and 1981 models, the control module shuts off current to the ignition coil 4 seconds after the ignition switch is turned ON. If the engine is not started within that time, the module must be reset by turning the ignition switch OFF and ON again. Later ignition modules allow 6 seconds for the engine to be started.\\ \\ The timing sensor is triggered by the leading and trailing edges of the 2 rotor lobes [Cam Position Sensor]. As rpm increases, the control module "steps" the timing in 3 stages of advance. | | | On 1980 and 1981 models, the solid-state ignition control module is mounted on the bottom of the battery carrier/oil tank. On 1982 and later models, the control module is located behind the side cover, mounted to the frame next to the battery.\\ \\ NOTE: On 1980-early and 1981 models, the control module shuts off current to the ignition coil 4 seconds after the ignition switch is turned ON. If the engine is not started within that time, the module must be reset by turning the ignition switch OFF and ON again. Later ignition modules allow 6 seconds for the engine to be started.\\ \\ The timing sensor is triggered by the leading and trailing edges of the 2 rotor lobes [Cam Position Sensor]. As rpm increases, the control module "steps" the timing in 3 stages of advance. | | ||
| - | The Coil is powered by the same WHITE wire as the Ignition Module. The Coil does not have power turned off by the Ignition Module, it simply, internally, stops GROUNDING the trigger side of the coil after 4 (or 6) seconds in order to prevent burning up the coil (see the Precaution in the Circuit Breaker/Points section above). | + | The Coil is powered by the same WHITE wire as the Ignition Module. The Coil does not have power turned off by the Ignition Module, it simply, internally, stops GROUNDING the trigger side of the coil after 4 or 6 seconds in order to prevent burning up the coil (see the Precaution in the Circuit Breaker/Points section above). |
| NOTE: The RUN Switch does permit or kill the power to both the Ignition Module and the Coil - This means that in addition to the Keyswitch being able to reset the Ignition Module, you can simply flip the RUN Switch OFF & ON to RESET the module because that will completely power down the module & coil. | NOTE: The RUN Switch does permit or kill the power to both the Ignition Module and the Coil - This means that in addition to the Keyswitch being able to reset the Ignition Module, you can simply flip the RUN Switch OFF & ON to RESET the module because that will completely power down the module & coil. | ||
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| ===== Timing Marks ===== | ===== Timing Marks ===== | ||
| + | **All 57-71 Sportster 900 engines**: ((Dr Dick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1427992)) \\ | ||
| + | The single line is 45° BTDC front cylinder (original factory advanced ignition timing setting). \\ | ||
| + | The double lines are 15° BTDC front cylinder (used to set retarded kick start timing). \\ | ||
| + | |||
| + | The dot is TDC front cylinder (not used for any ignition settings). \\ | ||
| + | The dot is NOT rear cylinder advanced timing like on AMF big twin models. The AMF sportsters used double dots for rear advanced timing. | ||
| + | |||
| + | **76-85 1000 engines**: ((Dr Dick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1427992)) \\ | ||
| + | The single mark is 40° BTDC (original factory advanced ignition timing setting). \\ | ||
| + | |||
| + | **Preparing the timing mark for using a timing light**: \\ | ||
| Clean the timing mark on the flywheel and apply a paint color that will stand out when viewing it with a timing light. ((DirtyCory of the XLFORUM http://xlforum.net/forums/showthread.php?t=1793084)) \\ | Clean the timing mark on the flywheel and apply a paint color that will stand out when viewing it with a timing light. ((DirtyCory of the XLFORUM http://xlforum.net/forums/showthread.php?t=1793084)) \\ | ||
| You can spray some brake cleaner on a Q-tip to clean the timing mark. \\ | You can spray some brake cleaner on a Q-tip to clean the timing mark. \\ | ||
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| Install the clear plug into the timing hole. \\ | Install the clear plug into the timing hole. \\ | ||
| It should be very near but not touching the flywheel. (go in till you touch the wheel and back off a 1/8-1/4 turn). | It should be very near but not touching the flywheel. (go in till you touch the wheel and back off a 1/8-1/4 turn). | ||
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| ===== Setting Ignition Timing ===== | ===== Setting Ignition Timing ===== | ||
